ML24215A070

LLC, Response to SDAA Audit Question Number A-3.9.6-15

ML24215A070
Person / Time
Site:	05200050
Issue date:	08/02/2024
From:	NuScale
To:	Office of Nuclear Reactor Regulation
Shared Package
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References
LO-169995
Download: ML24215A070 (1)

Text

Response to SDAA Audit Question Question Number: A-3.9.6-15 Receipt Date: 07/17/2023 Question:

Discuss whether the new installation of venturis in the RVVs and RRVs will result in different performance of those valves such that the method and frequency of testing need to be adjusted to provide reasonable assurance of their operational readiness.

Response

The emergency core cooling system (ECCS) valve venturis are passive internal valve components with a fixed geometry. The installation of venturis in the reactor vent valves (RVVs) and reactor recirculation valves (RRVs) does not result in a different methodology or frequency of testing of any preservice or inservice test as described in US460 standard design approval application (SDAA) Section 3.9.6 and Table 3.9-17.

No changes to the SDAA are necessary.

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